
Gaithersburg
- County:
- Montgomery County
- County Seat:
- No
- Area (mi²):
- 10.321
- State:
- Maryland
Gaithersburg is a city located in Montgomery County, Maryland. Gaithersburg has a 2025 population of 69,615. Gaithersburg is currently growing at a rate of 0.04% annually and its population has increased by 0.19% since the most recent census, which recorded a population of 69,484 in 2020.
The average household income in Gaithersburg is $141,000 with a poverty rate of 8.83%. The median age in Gaithersburg is 37.8 years: 37.3 years for males, and 38.5 years for females.